Pipe rack



FIG. 1 is a side elevational view of a pipe rack showing our new design the side opposite that shown being identical;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear plan view thereof;

The cigarette extinguishers are shown partially in cross-section in FIG. 1 for completeness of disclosure. 

The ornamental design for a pipe rack, as shown and described. 